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Computer vulnerabilities of Cisco CSS

computer weakness CVE-2015-0286 CVE-2015-0287 CVE-2015-0289

OpenSSL 0.9/1.0.0/1.0.1: five vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of OpenSSL 0.9/1.0.0/1.0.1.
Severity: 3/4.
Number of vulnerabilities in this bulletin: 5.
Creation date: 19/03/2015.
Identifiers: 1701334, 1902519, 1960491, 1964410, 1975397, 55767, 7043086, 9010031, ARUBA-PSA-2015-007, bulletinapr2015, c04679334, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2015-AVI-169, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150320-openssl, cisco-sa-20150408-ntpd, cpuapr2017, cpuoct2016, cpuoct2017, CTX216642, CVE-2015-0286, CVE-2015-0287, CVE-2015-0289, CVE-2015-0292, CVE-2015-0293, DSA-3197-1, DSA-3197-2, FEDORA-2015-4300, FEDORA-2015-4303, FG-IR-15-008, FreeBSD-SA-15:06.openssl, HPSBUX03334, JSA10680, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2015:0554-1, openSUSE-SU-2015:1277-1, openSUSE-SU-2015:2243-1, openSUSE-SU-2016:0638-1, openSUSE-SU-2016:0640-1, RHSA-2015:0715-01, RHSA-2015:0716-01, RHSA-2015:0752-01, RHSA-2015:0800-01, RHSA-2016:0372-01, RHSA-2016:0445-01, RHSA-2016:0446-01, RHSA-2016:0490-01, SA40001, SA92, SB10110, SOL16301, SOL16302, SOL16317, SOL16319, SOL16320, SOL16321, SOL16323, SPL-98351, SPL-98531, SSA:2015-111-09, SSRT102000, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, SUSE-SU-2016:0678-1, TNS-2015-04, USN-2537-1, VIGILANCE-VUL-16429.
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Description of the vulnerability

Several vulnerabilities were announced in OpenSSL 0.9/1.0.0/1.0.1.

An attacker can force a read at an invalid address in ASN1_TYPE_cmp, in order to trigger a denial of service. [severity:2/4; CVE-2015-0286]

An attacker can generate a memory corruption in ASN.1, in order to trigger a denial of service, and possibly to execute code. [severity:3/4; CVE-2015-0287]

An attacker can force a NULL pointer to be dereferenced in PKCS#7, in order to trigger a denial of service. [severity:2/4; CVE-2015-0289]

An attacker can generate a memory corruption with base64 data, in order to trigger a denial of service, and possibly to execute code. [severity:3/4; CVE-2015-0292]

An attacker can generate an OPENSSL_assert, in order to trigger a denial of service. [severity:2/4; CVE-2015-0293]
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cybersecurity note CVE-2015-0667

Cisco Content Services Switch: privilege escalation via SSH Forwarding

Synthesis of the vulnerability

An attacker can use the SSH Forwarding of Cisco Content Services Switch, in order to escalate his privileges.
Severity: 2/4.
Creation date: 19/03/2015.
Identifiers: CSCut14855, CVE-2015-0667, VIGILANCE-VUL-16427.
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Description of the vulnerability

The Cisco Content Services Switch product offers an administration service.

However, a SSH rule allows a port forwarding to this administration service.

An attacker can therefore use the SSH Forwarding of Cisco Content Services Switch, in order to escalate his privileges.
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computer weakness announce CVE-2015-0288

OpenSSL: NULL pointer dereference via X509_to_X509_REQ

Synthesis of the vulnerability

An attacker can force a NULL pointer to be dereferenced in X509_to_X509_REQ() of OpenSSL, in order to trigger a denial of service.
Severity: 2/4.
Creation date: 09/03/2015.
Identifiers: 1701334, 1964410, 55767, 9010031, c04679334, CERTFR-2015-AVI-089, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150320-openssl, cisco-sa-20150408-ntpd, cpuoct2017, CTX216642, CVE-2015-0288, DSA-3197-1, DSA-3197-2, FEDORA-2015-4300, FEDORA-2015-4303, FEDORA-2015-6855, FreeBSD-SA-15:06.openssl, HPSBUX03334, JSA10680, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2015:0554-1, openSUSE-SU-2015:1277-1, openSUSE-SU-2015:2243-1, openSUSE-SU-2016:0640-1, RHSA-2015:0715-01, RHSA-2015:0716-01, RHSA-2015:0752-01, RHSA-2015:0800-01, SA40001, SB10110, SOL16301, SOL16302, SOL16317, SOL16319, SOL16320, SOL16321, SOL16323, SPL-98351, SPL-98531, SSA:2015-111-09, SSRT102000, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, TNS-2015-04, USN-2537-1, VIGILANCE-VUL-16342.
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Description of the vulnerability

The OpenSSL product processes X.509 certificates.

However, the X509_to_X509_REQ() function does not check if a pointer is NULL, before using it.

An attacker can therefore force a NULL pointer to be dereferenced in X509_to_X509_REQ() of OpenSSL, in order to trigger a denial of service.
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computer weakness CVE-2015-0209

OpenSSL: use after free via d2i_ECPrivateKey

Synthesis of the vulnerability

An attacker can force the usage of a freed memory area in d2i_ECPrivateKey of OpenSSL, in order to trigger a denial of service, and possibly to execute code.
Severity: 3/4.
Creation date: 09/03/2015.
Identifiers: 1698703, 1701334, 1902519, 1960491, 1964410, 55767, 7043086, 9010031, ARUBA-PSA-2015-007, c04679334, CERTFR-2015-AVI-089, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150320-openssl, cisco-sa-20150408-ntpd, cpuoct2017, CTX216642, CVE-2015-0209, DSA-3197-1, DSA-3197-2, FEDORA-2015-10047, FEDORA-2015-10108, FEDORA-2015-4300, FEDORA-2015-4303, FEDORA-2015-6855, FreeBSD-SA-15:06.openssl, HPSBUX03334, JSA10680, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2015:0554-1, openSUSE-SU-2015:1277-1, openSUSE-SU-2016:0640-1, RHSA-2015:0715-01, RHSA-2015:0716-01, RHSA-2015:0752-01, RHSA-2016:1087-01, RHSA-2016:1088-01, RHSA-2016:1089-01, SA40001, SOL16301, SOL16302, SOL16317, SOL16319, SOL16320, SOL16321, SOL16323, SPL-98351, SPL-98531, SSA:2015-111-09, SSRT102000, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, TNS-2015-04, TSB16661, USN-2537-1, VIGILANCE-VUL-16341.
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Description of the vulnerability

The OpenSSL product implements the Elliptic Curves algorithm.

However, the d2i_ECPrivateKey() function frees a memory area before reusing it.

An attacker can therefore force the usage of a freed memory area in d2i_ECPrivateKey() of OpenSSL, in order to trigger a denial of service, and possibly to execute code.
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computer threat alert CVE-2014-3566

SSL 3.0: decrypting session, POODLE

Synthesis of the vulnerability

An attacker, located as a Man-in-the-Middle, can decrypt a SSL 3.0 session, in order to obtain sensitive information.
Severity: 3/4.
Creation date: 15/10/2014.
Identifiers: 10923, 1589583, 1595265, 1653364, 1657963, 1663874, 1687167, 1687173, 1687433, 1687604, 1687611, 1690160, 1690185, 1690342, 1691140, 1692551, 1695392, 1696383, 1699051, 1700706, 2977292, 3009008, 7036319, aid-10142014, AST-2014-011, bulletinapr2015, bulletinjan2015, bulletinjan2016, bulletinjul2015, bulletinjul2016, bulletinoct2015, c04486577, c04487990, c04492722, c04497114, c04506802, c04510230, c04567918, c04616259, c04626982, c04676133, c04776510, CERTFR-2014-ALE-007, CERTFR-2014-AVI-454, CERTFR-2014-AVI-509, CERTFR-2015-AVI-169, CERTFR-2016-AVI-303, cisco-sa-20141015-poodle, cpujul2017, CTX216642, CVE-2014-3566, DSA-3053-1, DSA-3253-1, DSA-3489-1, ESA-2014-178, ESA-2015-098, ESXi500-201502001, ESXi500-201502101-SG, ESXi510-201503001, ESXi510-201503001-SG, ESXi510-201503101-SG, ESXi550-201501001, ESXi550-201501101-SG, FEDORA-2014-12989, FEDORA-2014-12991, FEDORA-2014-13012, FEDORA-2014-13017, FEDORA-2014-13040, FEDORA-2014-13069, FEDORA-2014-13070, FEDORA-2014-13444, FEDORA-2014-13451, FEDORA-2014-13764, FEDORA-2014-13777, FEDORA-2014-13781, FEDORA-2014-13794, FEDORA-2014-14234, FEDORA-2014-14237, FEDORA-2014-15379, FEDORA-2014-15390, FEDORA-2014-15411, FEDORA-2014-17576, FEDORA-2014-17587, FEDORA-2015-9090, FEDORA-2015-9110, FreeBSD-SA-14:23.openssl, FSC-2014-8, HPSBGN03256, HPSBGN03305, HPSBGN03332, HPSBHF03156, HPSBHF03300, HPSBMU03152, HPSBMU03184, HPSBMU03213, HPSBMU03416, HPSBUX03162, HPSBUX03194, JSA10656, MDVSA-2014:203, MDVSA-2014:218, MDVSA-2015:062, NetBSD-SA2014-015, nettcp_advisory, openSUSE-SU-2014:1331-1, openSUSE-SU-2014:1384-1, openSUSE-SU-2014:1395-1, openSUSE-SU-2014:1426-1, openSUSE-SU-2016:0640-1, openSUSE-SU-2016:1586-1, openSUSE-SU-2017:0980-1, PAN-SA-2014-0005, POODLE, RHSA-2014:1652-01, RHSA-2014:1653-01, RHSA-2014:1692-01, RHSA-2014:1920-01, RHSA-2014:1948-01, RHSA-2015:0010-01, RHSA-2015:0011-01, RHSA-2015:0012-01, RHSA-2015:1545-01, RHSA-2015:1546-01, SA83, SB10090, SB10104, sk102989, SOL15702, SP-CAAANKE, SP-CAAANST, SPL-91947, SPL-91948, SSA:2014-288-01, SSA-396873, SSA-472334, SSRT101767, STORM-2014-02-FR, SUSE-SU-2014:1357-1, SUSE-SU-2014:1361-1, SUSE-SU-2014:1386-1, SUSE-SU-2014:1387-1, SUSE-SU-2014:1387-2, SUSE-SU-2014:1409-1, SUSE-SU-2015:0010-1, SUSE-SU-2016:1457-1, SUSE-SU-2016:1459-1, T1021439, TSB16540, USN-2839-1, VIGILANCE-VUL-15485, VMSA-2015-0001, VMSA-2015-0001.1, VMSA-2015-0001.2, VN-2014-003, VU#577193.
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Description of the vulnerability

An SSL/TLS session can be established using several protocols:
 - SSL 2.0 (obsolete)
 - SSL 3.0
 - TLS 1.0
 - TLS 1.1
 - TLS 1.2

An attacker can downgrade the version to SSLv3. However, with SSL 3.0, an attacker can change the padding position with a CBC encryption, in order to progressively guess clear text fragments.

This vulnerability is named POODLE (Padding Oracle On Downgraded Legacy Encryption).

An attacker, located as a Man-in-the-Middle, can therefore decrypt a SSL 3.0 session, in order to obtain sensitive information.
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cybersecurity alert CVE-2014-0224

OpenSSL: man in the middle via ChangeCipherSpec

Synthesis of the vulnerability

An attacker can act as a man in the middle between a client and a server using OpenSSL, in order to read or alter exchanged data.
Severity: 3/4.
Creation date: 05/06/2014.
Revision date: 05/06/2014.
Identifiers: 1676496, 1690827, aid-06062014, c04336637, c04347622, c04363613, CERTFR-2014-AVI-253, CERTFR-2014-AVI-254, CERTFR-2014-AVI-255, CERTFR-2014-AVI-260, CERTFR-2014-AVI-274, CERTFR-2014-AVI-279, CERTFR-2014-AVI-286, CERTFR-2014-AVI-513, cisco-sa-20140605-openssl, cpuoct2016, CTX140876, CVE-2014-0224, DOC-53313, DSA-2950-1, DSA-2950-2, FEDORA-2014-17576, FEDORA-2014-17587, FEDORA-2014-7101, FEDORA-2014-7102, FG-IR-14-018, FreeBSD-SA-14:14.openssl, HPSBHF03052, HPSBUX03046, JSA10629, MDVSA-2014:105, MDVSA-2014:106, MDVSA-2015:062, NetBSD-SA2014-006, openSUSE-SU-2014:0764-1, openSUSE-SU-2014:0765-1, openSUSE-SU-2015:0229-1, openSUSE-SU-2016:0640-1, RHSA-2014:0624-01, RHSA-2014:0625-01, RHSA-2014:0626-01, RHSA-2014:0627-01, RHSA-2014:0628-01, RHSA-2014:0629-01, RHSA-2014:0630-01, RHSA-2014:0631-01, RHSA-2014:0632-01, RHSA-2014:0633-01, RHSA-2014:0679-01, RHSA-2014:0680-01, SA40006, SA80, SB10075, sk101186, SOL15325, SPL-85063, SSA:2014-156-03, SSA-234763, SSRT101590, SUSE-SU-2014:0759-1, SUSE-SU-2014:0759-2, SUSE-SU-2014:0761-1, SUSE-SU-2014:0762-1, USN-2232-1, USN-2232-2, USN-2232-3, USN-2232-4, VIGILANCE-VUL-14844, VMSA-2014-0006, VMSA-2014-0006.1, VMSA-2014-0006.10, VMSA-2014-0006.11, VMSA-2014-0006.2, VMSA-2014-0006.3, VMSA-2014-0006.4, VMSA-2014-0006.5, VMSA-2014-0006.6, VMSA-2014-0006.7, VMSA-2014-0006.8, VMSA-2014-0006.9, VU#978508.
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Description of the vulnerability

The OpenSSL product implements SSL/TLS, which uses a handshake.

However, by using a handshake with a ChangeCipherSpec message, an attacker can force the usage of weak keys.

An attacker can therefore act as a man in the middle between a client and a server using OpenSSL, in order to read or alter exchanged data.
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weakness CVE-2014-3470

OpenSSL: denial of service via ECDH

Synthesis of the vulnerability

An attacker, who is located on a TLS server, can use Anonymous ECDH, in order to trigger a denial of service in OpenSSL client applications.
Severity: 2/4.
Creation date: 05/06/2014.
Identifiers: 1676496, aid-06062014, c04336637, c04363613, c04368523, CERTFR-2014-AVI-253, CERTFR-2014-AVI-254, CERTFR-2014-AVI-255, CERTFR-2014-AVI-260, CERTFR-2014-AVI-274, CERTFR-2014-AVI-279, CERTFR-2014-AVI-286, cisco-sa-20140605-openssl, CTX140876, CVE-2014-3470, DOC-53313, DSA-2950-1, DSA-2950-2, FEDORA-2014-17576, FEDORA-2014-17587, FEDORA-2014-7101, FEDORA-2014-7102, FG-IR-14-018, FreeBSD-SA-14:14.openssl, HPSBMU03069, HPSBUX03046, JSA10629, MDVSA-2014:105, MDVSA-2014:106, MDVSA-2015:062, NetBSD-SA2014-006, openSUSE-SU-2014:0764-1, openSUSE-SU-2014:0765-1, openSUSE-SU-2016:0640-1, RHSA-2014:0625-01, RHSA-2014:0628-01, RHSA-2014:0679-01, SA40006, SA80, SB10075, SPL-85063, SSA:2014-156-03, SSA-234763, SSRT101590, SUSE-SU-2014:0759-1, SUSE-SU-2014:0759-2, SUSE-SU-2014:0761-1, SUSE-SU-2014:0762-1, USN-2232-1, USN-2232-2, USN-2232-3, USN-2232-4, VIGILANCE-VUL-14847, VMSA-2014-0006, VMSA-2014-0006.1, VMSA-2014-0006.10, VMSA-2014-0006.11, VMSA-2014-0006.2, VMSA-2014-0006.3, VMSA-2014-0006.4, VMSA-2014-0006.5, VMSA-2014-0006.6, VMSA-2014-0006.7, VMSA-2014-0006.8, VMSA-2014-0006.9.
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Description of the vulnerability

A client based on the OpenSSL library can create an encrypted session using elliptic curves (ECDH : elliptic curves and Diffie-Hellman).

However, a malicious server can negotiate an Anonymous ECDH ciphersuite, in order to trigger a denial of service in the OpenSSL client.

An attacker, who is located on a TLS server, can therefore use Anonymous ECDH, in order to trigger a denial of service in OpenSSL client applications.
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computer threat bulletin CVE-2014-0076

OpenSSL: disclosure of ECDSA secret

Synthesis of the vulnerability

A local attacker can guess the ECDSA secret used by the OpenSSL implementation, in order to obtain sensitive information.
Severity: 1/4.
Creation date: 21/03/2014.
Revision date: 05/06/2014.
Identifiers: 1673696, 1681249, 1688949, c04336637, CERTFR-2014-AVI-179, CERTFR-2014-AVI-253, CERTFR-2014-AVI-254, CERTFR-2014-AVI-255, CERTFR-2014-AVI-279, CERTFR-2014-AVI-286, cisco-sa-20140605-openssl, CVE-2014-0076, DOC-53313, DSA-2908-1, FreeBSD-SA-14:06.openssl, HPSBUX03046, JSA10629, MDVSA-2014:067, MDVSA-2015:062, NetBSD-SA2014-006, openSUSE-SU-2014:0480-1, openSUSE-SU-2016:0640-1, pfSense-SA-14_04.openssl, SA40006, SB10075, SSA:2014-098-01, SSRT101590, SUSE-SU-2014:0759-1, SUSE-SU-2014:0761-1, SUSE-SU-2014:0762-1, USN-2165-1, VIGILANCE-VUL-14462.
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Description of the vulnerability

The ECDSA (Elliptic Curve Digital Signature Algorithm) algorithm uses a secret "k" value.

However, a local attacker can monitor the process linked to OpenSSL, and use the "FLUSH+RELOAD Cache" attack on a conditional branch (if), to obtain bit after bit the "k" secret value.

A local attacker can therefore guess the ECDSA secret used by the OpenSSL implementation, in order to obtain sensitive information.
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security alert CVE-2010-5298

OpenSSL: data injection via OPENSSL_NO_BUF_FREELIST

Synthesis of the vulnerability

An attacker can establish a connection with a multi-thread application linked to OpenSSL with OPENSSL_NO_BUF_FREELIST, in order to potentially inject data in the session of another user.
Severity: 1/4.
Creation date: 14/04/2014.
Revision date: 05/06/2014.
Identifiers: 2167, aid-06062014, c04347622, CERTFR-2014-AVI-253, CERTFR-2014-AVI-254, CERTFR-2014-AVI-255, CERTFR-2014-AVI-260, CERTFR-2014-AVI-274, CERTFR-2014-AVI-279, CERTFR-2014-AVI-286, cisco-sa-20140605-openssl, CTX140876, CVE-2010-5298, DOC-53313, DSA-2908-1, FEDORA-2014-17576, FEDORA-2014-17587, FEDORA-2014-7101, FEDORA-2014-7102, FG-IR-14-018, FreeBSD-SA-14:09.openssl, HPSBHF03052, JSA10629, MDVSA-2014:090, MDVSA-2015:062, NetBSD-SA2014-006, openSUSE-SU-2014:0592-1, RHSA-2014:0625-01, RHSA-2014:0628-01, RHSA-2014:0679-01, SA40006, SA80, SB10075, SOL15328, SSA:2014-156-03, SSA-234763, USN-2192-1, VIGILANCE-VUL-14585, VMSA-2014-0006, VMSA-2014-0006.1, VMSA-2014-0006.10, VMSA-2014-0006.11, VMSA-2014-0006.2, VMSA-2014-0006.3, VMSA-2014-0006.4, VMSA-2014-0006.5, VMSA-2014-0006.6, VMSA-2014-0006.7, VMSA-2014-0006.8, VMSA-2014-0006.9.
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Description of the vulnerability

The OpenSSL product uses a proprietary implementation of malloc to manage its memory.

However, when this feature is disabled with OPENSSL_NO_BUF_FREELIST, a memory area is not freed, and the ssl3_setup_read_buffer() function can, in multi-thread mode, reuse data from another SSL session.

An attacker can therefore establish a connection with a multi-threaded application linked to OpenSSL with OPENSSL_NO_BUF_FREELIST, in order to potentially inject data in the session of another user.
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computer vulnerability alert CVE-2014-0198

OpenSSL: NULL pointer dereference via SSL_MODE_RELEASE_BUFFERS

Synthesis of the vulnerability

An attacker can dereference a NULL pointer in OpenSSL applications using SSL_MODE_RELEASE_BUFFERS, in order to trigger a denial of service.
Severity: 3/4.
Creation date: 02/05/2014.
Revisions dates: 02/05/2014, 05/06/2014.
Identifiers: 3321, aid-06062014, c04347622, CERTFR-2014-AVI-253, CERTFR-2014-AVI-254, CERTFR-2014-AVI-255, CERTFR-2014-AVI-260, CERTFR-2014-AVI-274, CERTFR-2014-AVI-279, CERTFR-2014-AVI-286, cisco-sa-20140605-openssl, CTX140876, CVE-2014-0198, DOC-53313, DSA-2931-1, FEDORA-2014-17576, FEDORA-2014-17587, FEDORA-2014-7101, FEDORA-2014-7102, FreeBSD-SA-14:10.openssl, HPSBHF03052, JSA10629, MDVSA-2014:080, MDVSA-2015:062, NetBSD-SA2014-006, openSUSE-SU-2014:0634-1, openSUSE-SU-2014:0635-1, RHSA-2014:0625-01, RHSA-2014:0628-01, RHSA-2014:0679-01, SA40006, SA80, SB10075, SOL15329, SSA:2014-156-03, SSA-234763, USN-2192-1, VIGILANCE-VUL-14690, VMSA-2014-0006, VMSA-2014-0006.1, VMSA-2014-0006.10, VMSA-2014-0006.11, VMSA-2014-0006.2, VMSA-2014-0006.3, VMSA-2014-0006.4, VMSA-2014-0006.5, VMSA-2014-0006.6, VMSA-2014-0006.7, VMSA-2014-0006.8, VMSA-2014-0006.9.
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Description of the vulnerability

The SSL_set_mode() function of OpenSSL defines the behavior of the library. The SSL_MODE_RELEASE_BUFFERS parameter, added in version 1.0.0, indicates to free the memory as soon as it it not needed anymore. The SSL module of Apache httpd uses it when Apache is configured to save memory.

The do_ssl3_write() function of the ssl/s3_pkt.c file sends SSLv3 packets. After sending data, the memory can be freed if SSL_MODE_RELEASE_BUFFERS is used, so a pointer can be NULL. However, OpenSSL does not check if this pointer is NULL, before using it.

An attacker can therefore dereference a NULL pointer in OpenSSL applications using SSL_MODE_RELEASE_BUFFERS, in order to trigger a denial of service.
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